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Finding the Fourth Proportional to 747.58, 1,032.88 and 622.84

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Solution

The fourth proportional to 747.58, 1,032.88 and 622.84 is: 860.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.58 : 1,032.88 = 622.84 : x
  2. Step 2: Convert to fraction form
    747.58/1,032.88 = 622.84/x
  3. Step 3: Cross multiply
    747.58x = 1,032.88 × 622.84
  4. Step 4: Simplify right side
    747.58x = 643,318.98
  5. Step 5: Solve for x
    x = 643,318.98/747.58
  6. Step 6: Final answer
    x = 860.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.